Archivist of the United States David S. Ferriero accepted the final report of the National Archives Forensic Document Examination Team which tested two pages of handwritten notes of H. R. “Bob” Haldeman, a chief of staff to President Richard M. Nixon, 1969-1973.
Testing performed on the documents included:
Hyperspectral imaging undertaken at the Library of Congress inWashington,DC, to study the ink and to possibly reveal latent or indented images on the paper;
Electrostatic detection analysis to possibly reveal indented images that could correspond to original handwriting on these or other pages – present or no longer present performed at the Treasury Inspector General for Tax Administration Forensic Science Laboratory inBeltsville,MD;
Video spectral comparison examinations of the documents to study the ink entries and paper substrates performed at the Treasury Inspector General for Tax Administration Forensic Science Laboratory inBeltsville,MD.
High resolution scans of the original documents and of the ESDA results were prepared at the National Archives Special Media Preservation Reformatting Division Digital Imaging Laboratory inCollege Park,MD.
Source: Digital Journal